摘要:
A preparation method of a toner comprising a binder resin and a colorant is disclosed, comprising forming resin particles containing a resin formed by allowing a styrene monomer, a (meth)acryl monomer and a polymer represented by the formula (1) to react, and mixing the resin particles with colorant particles which were dispersed and allowing the resin particles and the colorant particle to coagulate and fuse to form toner particles, X—(Y)n—X formula (1) wherein X is at least one of an acryloyl group and a methacryloyl group, Y is a radical polymerizable monomer unit and n is an integer of 25 to 1000.
摘要:
Disclosed is a toner including: a resin; coloring agent and release agent including compound or compounds represented by the following general formula (1): R1—(COO—R2)n, wherein R1 is a linking group having carbon number of 2 to 8 which may be a cyclic structure and may have a hydroxy group or fatty acid ester group; and each R2 is an alkyl group having carbon number of N, (N-2) or (N-4) independently, N is a natural number from 10 to 30, and n is a natural number from 3 to 4, R2 with carbon number of N is 80 to 97 percent by mass, R2 with carbon number of (N-2) is 0.0 to 7.8 percent by mass, R2 with carbon number of (N-4) is 3.0 to 13.0 percent by mass, R2 with carbon number of (N-4) is included 1.5 percent by mass or more than R2 with carbon number of (N-2).
摘要:
Disclosed is a method for producing toner, comprising (1) mixing, with an aqueous medium, a resin solution of an organic solvent in which amorphous polyester resin having unsaturated dicarboxylic acid monomer units is dissolved, and forming an amorphous polyester resin particle dispersion; (2) adding a radical polymerization initiator to the amorphous polyester resin particle dispersion obtained in (1), cross-linking the amorphous polyester resin, and forming a cross-linked amorphous polyester resin particle dispersion; and (3) mixing at least the cross-linked amorphous polyester resin particle dispersion obtained in (2), with a crystalline polyester resin particle dispersion, aggregating cross-linked amorphous polyester resin particles and crystalline polyester resin particles, and forming toner particles.
摘要:
A toner for electrostatic latent image development is disclosed comprising colored particles containing a binder resin and a colorant and external-additive particles attached to the surfaces of the colored particles, wherein the external-additive particles comprise resin particles covered with an inorganic layer, and the resin particles are bound to the inorganic layer by a siloxane bond. A preparation method of the toner is also disclosed.
摘要:
A toner for an electrophotography and its manufacturing method are disclosed. The toner comprises toner particles containing a cross-linked polymer having two-valent crosslinking group represented by Formula (1), wherein, R1 is a hydrogen atom or a chlorine atom, R2 is a hydrogen atom, a chlorine atom or a methoxy group. The toner satisfies storage durability against heat as well as sufficient low temperature fixing ability.
摘要:
An electrostatic image forming method is described. The method includes forming latent images corresponding to yellow, magenta and cyan images on a photoreceptor, developing corresponding latent images by developers containing yellow, magenta and cyan toner to form yellow, magenta and cyan images and transferring the yellow, magenta and cyan images on a recording material, and the yellow toner and the magenta have specific reflectance characteristics described in the specification.
摘要:
Provided is a toner containing toner particles containing a polyester resin which has a structure part represented by Formula (1): wherein, “A” represents a polyester structure unit having at least one linking group; R1 represents a hydrogen atom, or a chlorine atom; R2 represents a hydrogen atom, a chlorine atom, or a methoxy group; and “L” represents a divalent organic group.
摘要:
A production method of a toner for developing an electrostatic image composed of toner parent particles and external additives adhered to a surface the toner parent particles is disclosed. The method includes steps of preparing toner parent particles dispersion liquid in which toner parent particles are dispersed in a medium, first mixing the dispersion liquid with a quaternary ammonium salt compound and a water soluble organic solvent to prepare liquid mixture, and second mixing the liquid mixture with external additive dispersion liquid in which negative charged external additives are dispersed.
摘要:
A method of producing a water dispersion of polyester resin particles containing the steps of: emulsifying and dispersing at least a diol, a dicarboxylic acid and at least one polycondensation catalyst selected from a surfactant catalyst and a rare earth metal catalyst in water to form an emulsified dispersion liquid; and irradiating the emulsified dispersion liquid with a microwave to conduct a polycondensation reaction, whereby polyester resin particles are produced.
摘要:
A magenta toner for developing an electrostatic image composed of a binder and a colorant is disclosed. The toner contains a tone controlling agent having a peak of fluorescent spectrum from 380 to 500 nm. An image excellent in light fastness and durability can be obtained and high color reproducibility with sufficient transparency and chromaticness can be realized by the magenta toner.